William J. Guarini Inc. Reviews

D. Lin 2026.03.11

     

William J. Guarini is the company that I can fully trust. After contacting them for the leaking of the heating system, they came in an hour to repair and tested the water boiler. I also had the serveral water heaters replaced by them through PSE&G contracts indirectly in the past. Their services were quick, effective, and great.

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Reply from William J. Guarini Inc.

We appreciate your trust and detailed feedback on our responsiveness and water heater work. Thank you for choosing William J. Guarini Inc. repeatedly.

John Terrano 2026.02.28

     

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susanna hari 2026.02.21

     

Team arrived on time, explained everything with the cost breakdown. Went through points of inspection, service and demonstration of new unit and all repairs done. Clean up and installation were perfectly smooth. Very professional service and will be calling them again.

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Reply from William J. Guarini Inc.

Susanna, thank you for recognizing our team's professionalism and clear communication throughout your installation. We appreciate your detailed feedback and trust.

Carol Brown 2026.02.20

     

I have called on this company so many times knowing I was dealing with good honest professionals. I’ve had several plumbing and heating problems. They always came through for me. I trust their judgement and work….and their prices were affordable. They have 24 hr service and can always be reached at any time! Great office personnel, too.

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Reply from William J. Guarini Inc.

Carol, thank you for trusting our plumbing and heating team. We truly appreciate your kind words about our reliability and office staff.

Tom 2026.02.09

     

Great experience with them so far working to resolve some tankless water heater issues; the work and journey continues and I will update.

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Reply from William J. Guarini Inc.

Tom, thanks for sharing your experience so far. We appreciate your patience as our team addresses your tankless water heater concerns.

Charles Rashaan Coleman 2026.01.29

     

He went in the basement, turn up up the furnace from 140 to 180 came upstairs. Felt the heat in the baseboards and straightening out my thermostat and left

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J. T. 2026.01.21

     

I used Guarini for the repair of a leaking water service line. This is not an average plumbing job. It's a minimum 8 hour job, with a team of four or five people. I chose them because they got recommended by several other plumbers I spoke with. And they did a great job. Price was fair, more affordable than two other quotes I got. Their people are very professional and pleasant to work with.

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Reply from William J. Guarini Inc.

We’re grateful for your trust handling such a complex repair. It’s great to hear our team’s professionalism and fair pricing stood out.

Alex Iacullo 2026.01.20

     

FANTASTIC SERVICE👏👍 Technician was knowable , professional and neat. I could not be more pleased, met and Exceeded My Expectations 🫡

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Reply from William J. Guarini Inc.

Alex, thanks for highlighting our technician’s expertise and professionalism. We appreciate your trust and are glad expectations were surpassed.

Ankur Patel 2026.01.15

     

I found Guarini Plumbing after getting an absurd quote from Roto-Rooter for a broken sewer pipe. Guarini was far more affordable and a huge relief to work with. It was great to deal with real people who were honest and straightforward the entire time. The job took just slightly longer than estimated, and they did not overcharge for the extra time… something that’s rare in plumbing work. Huge shout-out to Rachel, who was helpful and communicative from the first call through completion, even around the holidays. The crew doing the excavation and pipe work was professional, respectful, and genuinely considerate. They even delayed towing a car parked in a blocked-off area until it was absolutely necessary, which says a lot about how they operate. Excellent plumbing and sewer repair experience. I’ll be using Guarini for all future plumbing and heating needs and highly recommend them to anyone in the area.

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Reply from William J. Guarini Inc.

Ankur, your detailed feedback means a lot. Rachel and our crew appreciate your recognition of their care and communication throughout your sewer repair.

Paul Clark 2026.01.06

     

Reliable and professional. This was my first time dealing with Guarini plumbing. They were quick to respond to my plumbing problem. The plumber they sent out, Dominic, did an excellent job. Very good people to deal with.

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Reply from William J. Guarini Inc. 2026.01.06

Paul, thanks for sharing your experience with Dominic and our team. We’re glad you felt supported throughout your first visit.

Noel Garcia 2026.01.05

     

Guarini Plumbing has been my go to plumbers ever since I came to Golden Door Charter School in Jersey City. They are reliable, clean, have fair pricing, and are professional.

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Reply from William J. Guarini Inc. 2026.01.05

Noel, thanks for highlighting our reliability and professionalism. We appreciate your continued trust at Golden Door Charter School in Jersey City.

Maryann Hourican 2025.11.12

     

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Angus Vail 2025.11.11

     

This company and the plumbers they use are great. Always reliable, and will make sure things are done right. If there's ever an issue with their work, they will come back and make sure things are taken care of. They are not the cheapest plumbers, but they are reliable, and do good work. I would not use anyone else.

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Reply from William J. Guarini Inc. 2025.11.11

Angus, we’re grateful you trust our team’s reliability and attention to detail. Your confidence in William J. Guarini Inc. means a lot.

Ricky Bagolie 2025.10.08

     

came right away and did good work for a fair price

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Reply from William J. Guarini Inc. 2025.10.08

Ricky, we appreciate your feedback. Prompt service and fair pricing are important to us—thanks for highlighting your experience.

Denise Sperduto 2025.09.26

     

Guarini did a GREAT JOB in fixing our Plumbing problem in 1 hour. Cliff was our service man and he was polite and did a Fabulous job! Thank You! Sincerely, Denise Sperduto

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Reply from William J. Guarini Inc.

Denise, thanks for highlighting Cliff’s work and quick resolution. We appreciate your thoughtful feedback and are glad Guarini could assist.

Daniel Jung 2025.09.20

     

They are a professional company but one that charges through the roof. We initially asked Guarini for a faucet and valve replacement and they quoted $348 total which was a reasonable price and in line with other plumbers. In the confirmation they then said it was a per-hour price but the job would take roughly an hour, so we went with them due to their good reputation. On the day of service, they came 20 minutes before scheduled and before a water shutoff could even take place. Water shutoff and restart took another hour or so during which the techs were just on their phones and not even within the unit, nowhere to be found. In all the techs were around for just over 2 hours, and they billed for 3 - they will round up any partial hour they are here, including before the scheudled appointment! So a 1 hour job ended up being billed for 3 hours and in addition they charged a $130 material fee, despite us providing the faucet they installed, well above what is standard. We ended up getting charged about $1100 for "3 hours" of work, or $750 over the initial estimate. Stay away from this company unless you have money to burn. They also installed the faucet wrong but were quick to respond to a callback to fix this at no charge.

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Stefano Pisciotta 2025.09.05

     

They charged 2000 dollars for a 900 dollar water heater. I understand installation costs but this is way too much

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Reply from William J. Guarini Inc. 2025.09.08

Good Afternoon Mr. Pisciotta,

We are sorry to hear you had a less than stellar experience. We understand you are not happy with the price of the work, however all job pricing was given to you upfront and approved prior to any work being performed. Also, we added 2 additional warranty years on the water heater at no charge and received a text message with your praises for the quality of work. Please call our office at 201-656-1530to discuss further. Thank you.

Trish Lindor 2025.09.04

     

Pat’s service was spot on, courteous, professional and quick. He knew the problem(s) within minutes of his arrival to my parent’s home and resolved it in a short span of time. We appreciate your great service Pat. Thank you again:).

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Reply from William J. Guarini Inc.

Pat will appreciate your kind words, Trish. We're glad his professionalism and efficient troubleshooting made a difference for your family.

Nancy Sebastian 2025.08.12

     

Guarini team provided prompt and excellent service!

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Alexis Parisi 2025.08.08

     

I've been working through a really funky problem in my condo in Downtown JC. Have had dozens of plumbers, HVAC, and others into the unit and nobody has ever seen anything like it. Working with Guarini was the first time I felt like the person actually cared about solving my problem vs. taking my money to do nothing. They were amazing - got somebody out to take a look and give me an estimate within 24 hours and even called me the next day with some additional ideas to try. I could tell they weren't just trying to make a buck and were so patient about explaining all their thoughts to me. When I suggested trying wild measures, they were honest about whether they thought it'd be worth it. Would 100% bring them in again!

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